Ninja DPS Output(A possible Fix)

[Satarn]

What nin is currently lacking is personal dmg up buff, all other melee jobs have such tool: Reaper-death design, Monk-greased light/stance, Samurai-cant remember skill name but both dmg up and weaponskill recast faster skills, DRG-tether/blood4blood/disembowel.

There is no mathematical difference between having a full uptime damage buff or just higher baseline potencies. The only good reason to give NIN something like that would be to give it another combo or some other decent maintenance mechanic, but it has nothing to do with NIN's state of being underpowered.

Also BfB(actually Lance Charge now) and tether on DRG aren't full uptime, they're burst buffs and Greased Lightning hasn't been a damage buff since mid-SHB - it's a passive gcd reduction trait now. As far as attack speed buffs go, NIN already has full uptime Huton.

Trick Attack from nin in current 5% form compared to 10% is underpowered compared to other jobs with dmg up buffs (reaper/monk) or crip up (drg litany), and since those jobs are easier to use its better to bring those other easier jobs that do more dmg compared to nins dmg-pilled up work

TA has been nerfed with it's shift from 10% for 10 seconds into 5% for 15 seconds, however it still remains the strongest raid burst buff in the game. All the other raid burst buffs have twice the recast and in many cases lower % increase as well. Crit rate from Litany has a lower value per percent than a flat out all-damage increase of TA.

Regardless, the reason NIN is underpowered isn't specifically because TA is too weak, but because NIN's total contribution from TA and their personal output isn't high enough. Balance doesn't care where the rDPS comes from, only how much.

But by looking on how other classes work they should rework nin from scratch

No. All of the noes. NIN plays fine for the most part, it could use some tweaks and improvements, but definitely not ones meant to make it more like other jobs. The only justification for homogenization is balance and there is nothing in NIN's playstyle that makes it weak mechanically - it's literally just numerical undertunning. If you want the playstyle of another job, then play that other job.